GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcrypto/engine/tb_pkmeth.c Lines: 4 36 11.1 %
Date: 2017-11-07 Branches: 1 24 4.2 %

Line Branch Exec Source
1
/* $OpenBSD: tb_pkmeth.c,v 1.6 2017/01/29 17:49:23 beck Exp $ */
2
/* ====================================================================
3
 * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
4
 *
5
 * Redistribution and use in source and binary forms, with or without
6
 * modification, are permitted provided that the following conditions
7
 * are met:
8
 *
9
 * 1. Redistributions of source code must retain the above copyright
10
 *    notice, this list of conditions and the following disclaimer.
11
 *
12
 * 2. Redistributions in binary form must reproduce the above copyright
13
 *    notice, this list of conditions and the following disclaimer in
14
 *    the documentation and/or other materials provided with the
15
 *    distribution.
16
 *
17
 * 3. All advertising materials mentioning features or use of this
18
 *    software must display the following acknowledgment:
19
 *    "This product includes software developed by the OpenSSL Project
20
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
21
 *
22
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23
 *    endorse or promote products derived from this software without
24
 *    prior written permission. For written permission, please contact
25
 *    licensing@OpenSSL.org.
26
 *
27
 * 5. Products derived from this software may not be called "OpenSSL"
28
 *    nor may "OpenSSL" appear in their names without prior written
29
 *    permission of the OpenSSL Project.
30
 *
31
 * 6. Redistributions of any form whatsoever must retain the following
32
 *    acknowledgment:
33
 *    "This product includes software developed by the OpenSSL Project
34
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
35
 *
36
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
40
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47
 * OF THE POSSIBILITY OF SUCH DAMAGE.
48
 * ====================================================================
49
 *
50
 * This product includes cryptographic software written by Eric Young
51
 * (eay@cryptsoft.com).  This product includes software written by Tim
52
 * Hudson (tjh@cryptsoft.com).
53
 *
54
 */
55
56
#include <openssl/err.h>
57
58
#include "eng_int.h"
59
#include <openssl/evp.h>
60
61
/* If this symbol is defined then ENGINE_get_pkey_meth_engine(), the function
62
 * that is used by EVP to hook in pkey_meth code and cache defaults (etc), will
63
 * display brief debugging summaries to stderr with the 'nid'. */
64
/* #define ENGINE_PKEY_METH_DEBUG */
65
66
static ENGINE_TABLE *pkey_meth_table = NULL;
67
68
void
69
ENGINE_unregister_pkey_meths(ENGINE *e)
70
{
71
	engine_table_unregister(&pkey_meth_table, e);
72
}
73
74
static void
75
engine_unregister_all_pkey_meths(void)
76
{
77
	engine_table_cleanup(&pkey_meth_table);
78
}
79
80
int
81
ENGINE_register_pkey_meths(ENGINE *e)
82
{
83
	if (e->pkey_meths) {
84
		const int *nids;
85
		int num_nids = e->pkey_meths(e, NULL, &nids, 0);
86
		if (num_nids > 0)
87
			return engine_table_register(&pkey_meth_table,
88
			    engine_unregister_all_pkey_meths, e, nids,
89
			    num_nids, 0);
90
	}
91
	return 1;
92
}
93
94
void
95
ENGINE_register_all_pkey_meths(void)
96
{
97
	ENGINE *e;
98
99
	for (e = ENGINE_get_first(); e; e = ENGINE_get_next(e))
100
		ENGINE_register_pkey_meths(e);
101
}
102
103
int
104
ENGINE_set_default_pkey_meths(ENGINE *e)
105
{
106
	if (e->pkey_meths) {
107
		const int *nids;
108
		int num_nids = e->pkey_meths(e, NULL, &nids, 0);
109
		if (num_nids > 0)
110
			return engine_table_register(&pkey_meth_table,
111
			    engine_unregister_all_pkey_meths, e, nids,
112
			    num_nids, 1);
113
	}
114
	return 1;
115
}
116
117
/* Exposed API function to get a functional reference from the implementation
118
 * table (ie. try to get a functional reference from the tabled structural
119
 * references) for a given pkey_meth 'nid' */
120
ENGINE *
121
ENGINE_get_pkey_meth_engine(int nid)
122
{
123
154536
	return engine_table_select(&pkey_meth_table, nid);
124
}
125
126
/* Obtains a pkey_meth implementation from an ENGINE functional reference */
127
const EVP_PKEY_METHOD *
128
ENGINE_get_pkey_meth(ENGINE *e, int nid)
129
{
130
	EVP_PKEY_METHOD *ret;
131
	ENGINE_PKEY_METHS_PTR fn = ENGINE_get_pkey_meths(e);
132
133
	if (!fn || !fn(e, &ret, NULL, nid)) {
134
		ENGINEerror(ENGINE_R_UNIMPLEMENTED_PUBLIC_KEY_METHOD);
135
		return NULL;
136
	}
137
	return ret;
138
}
139
140
/* Gets the pkey_meth callback from an ENGINE structure */
141
ENGINE_PKEY_METHS_PTR
142
ENGINE_get_pkey_meths(const ENGINE *e)
143
{
144
	return e->pkey_meths;
145
}
146
147
/* Sets the pkey_meth callback in an ENGINE structure */
148
int
149
ENGINE_set_pkey_meths(ENGINE *e, ENGINE_PKEY_METHS_PTR f)
150
{
151
	e->pkey_meths = f;
152
	return 1;
153
}
154
155
/* Internal function to free up EVP_PKEY_METHOD structures before an
156
 * ENGINE is destroyed
157
 */
158
159
void
160
engine_pkey_meths_free(ENGINE *e)
161
{
162
	int i;
163
6192
	EVP_PKEY_METHOD *pkm;
164
165
3096
	if (e->pkey_meths) {
166
		const int *pknids;
167
		int npknids;
168
		npknids = e->pkey_meths(e, NULL, &pknids, 0);
169
		for (i = 0; i < npknids; i++) {
170
			if (e->pkey_meths(e, &pkm, NULL, pknids[i])) {
171
				EVP_PKEY_meth_free(pkm);
172
			}
173
		}
174
	}
175
3096
}